{"slug": "fuzzy-duplicate-finder-for-spreadsheets", "title": "Fuzzy Duplicate Finder for Spreadsheets", "summary": "CleanMySheet released a fuzzy duplicate finder that groups near-duplicate spreadsheet rows using normalized Levenshtein similarity at a default threshold of about 85%, blocking on a short key prefix to keep large files usable. The tool parses CSV and Excel files on the user's device, surfaces matches in a review drawer, and removes nothing until a user marks a pair as a duplicate, with an undo option available from the recipe list. CleanMySheet states the similarity measure is a string distance rather than an LLM guess.", "body_md": "CleanMySheet guide\n\n# Find near-duplicate rows (fuzzy matching)\n\nCleanMySheet groups similar rows using normalized Levenshtein similarity (default ~85%) after blocking on a short key prefix so large files stay usable. Matches appear in a review drawer; nothing is removed until you mark a pair as a duplicate.\n\nNear-duplicates wait for your review.\n\nDrop CSV or Excel here\n\nTap to choose a file. Parsing stays on this device.\n\nParsing stays on this device. Optional: drop a .cleanmysheet.json recipe with it.\n\n[Open the cleaner](/clean?op=fuzzy)\n\n## Steps\n\n1. Run a scan after upload\n2. Add Fuzzy duplicate detection from search or Recommended\n3. Open Review fuzzy pairs\n4. Mark Duplicate or Keep both\n5. Undo anytime\n\n## Not an LLM guess\n\nSimilarity is a string distance, not a model hallucination. You can undo the whole step from the recipe list.\n\n## Related searches this page answers\n\n- fuzzy duplicate finder\n- near duplicate rows\n- similar contacts csv", "url": "https://wpnews.pro/news/fuzzy-duplicate-finder-for-spreadsheets", "canonical_source": "https://cleanmysheet.in/use/fuzzy-duplicate-finder", "published_at": "2026-09-11 17:17:51.300499+00:00", "updated_at": "2026-09-11 17:17:52.670024+00:00", "lang": "en", "topics": ["ai-tools", "developer-tools"], "entities": ["CleanMySheet", "Levenshtein similarity"], "alternates": {"html": "https://wpnews.pro/news/fuzzy-duplicate-finder-for-spreadsheets", "markdown": "https://wpnews.pro/news/fuzzy-duplicate-finder-for-spreadsheets.md", "text": "https://wpnews.pro/news/fuzzy-duplicate-finder-for-spreadsheets.txt", "jsonld": "https://wpnews.pro/news/fuzzy-duplicate-finder-for-spreadsheets.jsonld"}}